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US3953231A Expired / Lapsed US ⏱️ 0.0 years remaining

Sealed lithium-solid sulfur cell

Assignee: General Electric Co
•
Filing: 1975-04-25
•
Granted: 1976-04-27
•
Expires: 1995-04-25
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Abstract

Abstract A sealed lithium-solid sulfur cell for ambient temperature operation is described which comprises a casing, an anode positioned within the casing, the anode selected from the class consisting of lithium, lithium as an amalgam, and lithium in a nonaqueous electrolyte, a cathode positioned within the casing, the cathode comprising of solid sulfur in a nonaqueous electrolyte with an ionic conductivity enhancing material, and a solid lithium-sodium aluminate electrolyte positioned within the casing between the anode and cathode and in contact with both the anode and cathode, the solid lithium-sodium aluminate electrolyte having an approximate composition of LiNaO.9Al.sub. 2 O 3 of which 1.3 to 85% of the total alkali ion content is lithium.

Inventors

  • 👤 Gregory C. Farrington
  • 👤 Walter L. Roth

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 14:45
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M10/00; H01M10/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 107 words
A sealed lithium-solid sulfur cell comprises a casing, an anode positioned within the casing, the anode selected from the class consisting of lithium, lithium as an amalgam and lithium in a non-aqueous electrolyte, a cathode positioned within the casing, the cathode comprising solid sulfur in a nonaqueous solvent with an ionic conductivity enhancing material, and a solid lithium-sodium aluminate electrolyte positioned within the casing between the anode and cathode and in contact with both the anode and cathode, the solid lithium-sodium aluminate electrolyte having an approximate composition of LiNaO. 9Al 2 O 3 of which 1.3 to 85.0 percent of the total alkali ion content is lithium.
Claim 2
Dependent Claim 107 words
A sealed lithium-solid sulfur cell comprises a casing, an anode positioned within the casing, the anode selected from the class consisting of lithium, lithium as an amalgam and lithium in a non-aqueous electrolyte, a cathode positioned within the casing, the cathode comprising solid sulfur in a nonaqueous solvent with an ionic conductivity enhancing material, and a solid lithium-sodium aluminate electrolyte positioned within the casing between the anode and cathode and in contact with both the anode and cathode, the solid lithium-sodium aluminate electrolyte having an approximate composition of LiNaO. 9Al 2 O 3 of which 1.3 to 85.0 percent of the total alkali ion content is lithium.
Claim 3
Dependent Claim 30 words
A sealed lithium-solid sulfur cell as in claim 1, in which 40 to 60 percent of the total alkali ion content of the solid lithium-sodium aluminate electrolyte composition is lithium.
Claim 4
Dependent Claim 28 words
A sealed lithium-solid sulfur cell as in claim 1, in which 50 percent of the total alkali ion content of the solid lithium-sodium aluminate electrolyte composition is lithium.
Claim 5
Dependent Claim 21 words
A sealed lithium-solid sulfur cell as in claim 1, in which the solid sulfur includes carbon black and an organic binder.

References Cited (Backward Citations)

US3404036A Cited
US3573105A Cited
US3806369A Cited
US3713897A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-04-27 1979-10-27 1980-04-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-04-27 1983-10-27 1984-04-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-04-27 1987-10-27 1988-04-27 $7700.00 Window Closed / Lapsed

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